function upImage( url,el, img,data,key) {
    layui.use('upload', function () {
      var upload = layui.upload;
      //普通图片上传
      var uploadInst = upload.render({
        elem: el,
        url: url,
        data: {
          image: function () {
            return $(img).val();
          }
        },
        field: 'image',
        before: function (obj) {
          //预读本地文件示例，不支持ie8
          obj.preview(function (index, file, result) {
            $(img).attr('src', result); //图片链接（base64）
          });
        },
        done: function (res) {
        	console.log(res)
        	data[key]=res.image.pic_path
          //如果上传失败
          if (res.code == 0) {
            return layer.msg('上传失败');
          } else {
            return layer.msg('上传成功')
          }
        },
        error: function () {
          //演示失败状态，并实现重传
          var demoText = $('#demoText');
          demoText.html('<span style="color: #FF5722;">上传失败</span> <a class="layui-btn layui-btn-mini demo-reload">重试</a>');
          demoText.find('.demo-reload').on('click', function () {
            uploadInst.upload();
          });
        }
      });
  
    })
  }